Regular season Derthona and
Reggiana had been promoted from the Second Division.
AC Mantova was added as guest after a referees scandal they had suffered.
Group A Classification Results table Group B Classification Results table Tie-breaker :
Played on August 30, 1925, in Milan. Spal relegated to the second division, while Mantova qualified to the qualification play-off.
Legnano,
Mantova,
Novese and
Como were enlisted to participate in the qualification round, but Novese and Como retired, letting Legnano and Mantova to maintain their places in the
Italian First Division.
Finals Because of the sole points were considered by the championship regulations, with no relevance to the aggregation of goals, a tie-break was needed. ;Tie-breakers
Bologna qualified for the National Finals. ==Southern League==